TABLET WITH A POWER COIL STRUCTURE CAPABLE OF EFFICIENTLY LOADING A POWER COIL EVEN THROUGH THE WIDTH OF A BEZEL IS MINIMIZED

摘要

PURPOSE: A tablet with a power coil structure is provided to have a simple tablet manufacturing process by coupling an essential power coil loaded on a separate component and a power supply driver of the tablet.;CONSTITUTION: An electronic pen has a resonance circuit. The resonance circuit generates and stores energy induced when external-induced electromagnetic force is applied and releases self-induced electromagnetic force by the stored energy when the external-induced electromagnetic force is not applied. A power supply driver (32) outputs the AC power of a predetermined frequency. A power coil (30) surrounds a detection area of the electronic pen and releases the external-induced electromagnetic force by the AC power. Line selecting circuits (15,25) connect antennas (20) arranged in the outermost line to form a loop structure. One of the line antennas is isolated from the loop structure to be set as a differential output.;COPYRIGHT KIPO 2013;[Reference numerals] (10) Roof antenna; (110) Mobile devices; (112) Tablet module; (114) Mobile function module; (15,25) Line selection circuit; (18) Coordinate detecting circuit; (20) Line antenna; (30) Power coil; (32) Power supply driver; (41) Display function unit; (42) Communication function unit; (43) Manipulation function unit; (AA) Electronic pen